Abstract
Linear fractional Galton–Watson branching processes in i.i.d. random environment are, on the quenched level, intimately connected to random difference equations by the evolution of the random parameters of their linear fractional marginals. On the other hand, any random difference equation defines an autoregressive Markov chain (a random affine recursion) which can be positive recurrent, null recurrent and transient and which, as the forward iterations of an iterated function system, has an a.s. convergent counterpart in the positive recurrent case given by the corresponding backward iterations. The present expository article aims to provide an explicit view at how these aspects of random difference equations and their stationary limits, called perpetuities, enter into the results and the analysis, especially in quenched regime. Although most of the results presented here are known, we hope that the offered perspective will be welcomed by some readers.
Funding source: Deutsche Forschungsgemeinschaft
Award Identifier / Grant number: EXC 2044–390685587
Funding statement: Work partially funded by the Deutsche Forschungsgemeinschaft (DFG) under Germany’s Excellence Strategy EXC 2044–390685587, Mathematics Münster: Dynamics–Geometry–Structure.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- 5th International Workshop on Branching Processes and Their Applications (IWBPA 2021)
- Critical Galton–Watson Processes with Overlapping Generations
- Linear Fractional Galton–Watson Processes in Random Environment and Perpetuities
- Limit Theorems for a Strongly Supercritical Branching Process with Immigration in Random Environment
- Asymptotic Properties of a Supercritical Branching Process with Immigration in a Random Environment
- Branching Process Modelling of COVID-19 Pandemic Including Immunity and Vaccination
- Homogeneous Branching Processes with Non-Homogeneous Immigration
Articles in the same Issue
- Frontmatter
- 5th International Workshop on Branching Processes and Their Applications (IWBPA 2021)
- Critical Galton–Watson Processes with Overlapping Generations
- Linear Fractional Galton–Watson Processes in Random Environment and Perpetuities
- Limit Theorems for a Strongly Supercritical Branching Process with Immigration in Random Environment
- Asymptotic Properties of a Supercritical Branching Process with Immigration in a Random Environment
- Branching Process Modelling of COVID-19 Pandemic Including Immunity and Vaccination
- Homogeneous Branching Processes with Non-Homogeneous Immigration